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    • 2. 发明授权
    • High-speed routing control system
    • 高速路由控制系统
    • US06201810B1
    • 2001-03-13
    • US08910117
    • 1997-08-13
    • Michio MasudaMotoo NishiharaMakoto Ogawa
    • Michio MasudaMotoo NishiharaMakoto Ogawa
    • H04L1256
    • H04L45/04H04L45/22H04L45/70
    • In a high-speed routing control system, plural path candidates each leading to a destination node are selected on the basis of physical connection information of links connecting respective nodes in a path candidate selection unit 11, and a path candidate containing no congestion-occurring link is specified as the optimum path from the plural path candidates selected by the path candidate selection unit 11 in an optimizing unit 12. Accordingly, even when the destination node is nearer to the self node, the optimum path selection can be performed, and a switching operation to a bypass path can be performed at high speed. In addition, the traffic amount based on topology information can be suppressed, and the large-scaling of the network can be supported.
    • 在高速路由选择控制系统中,根据路径候补选择部11中连接各节点的链路的物理连接信息和不包含拥塞发生链路的路径候选,选择各个通向目的地节点的路径候选 被指定为在优化单元12中由路径候选选择单元11选择的多路径候选的最佳路径。因此,即使当目的地节点更靠近自身节点时,也可以执行最佳路径选择,并且切换 可以高速地执行到旁路路径的操作。 此外,可以抑制基于拓扑信息的流量,并且可以支持网络的大规模化。
    • 3. 发明授权
    • Loose source routing method of IP packet on ATM network
    • ATM网络IP报文的源路由方法松散
    • US06330242B1
    • 2001-12-11
    • US09114135
    • 1998-07-13
    • Makoto OgawaMotoo NishiharaMichio MasudaKurenai Murakami
    • Makoto OgawaMotoo NishiharaMichio MasudaKurenai Murakami
    • H04L1228
    • H04L45/10H04L45/34H04L69/16H04L69/161H04L69/168H04L2012/562H04L2012/5652H04L2012/5667H04Q11/0478
    • A loose source routing method is provided to transfer an IP packet from a transmission source gateway to a transfer destination gateway by way of ATM nodes, which are freely designated. At the transmission source gateway, the IP packet given from a user LAN is dissolved into ATM cells containing a BOM cell whose destination address designates the transfer destination gateway. In addition, at least one pseudo BOM cell whose destination address designates an ATM node in the ATM network is added and is located at a top place of a cell stream constructed by the dissolved ATM cells. Thus, the cell stream is transferred from the transmission source gateway to the designated ATM node in accordance with the destination address of the pseudo BOM cell. The designated ATM node discards the pseudo BOM cell so that the original BOM cell is now located at the top place of the cell stream. Then, the cell stream is transferred from the ATM node to the transfer destination gateway in accordance with the destination address of the BOM cell. The transfer destination gateway assembles the ATM cells into the IP packet, which is then sent to a user LAN.
    • 提供了一种松散的源路由方法,用于通过自动指定的ATM节点将IP分组从传输源网关传送到传输目的地网关。 在传输源网关,从用户LAN给出的IP分组被解析成包含目的地地址指定传输目的网关的BOM小区的ATM信元。 此外,至少一个其目的地地址指定ATM网络中的ATM节点的伪BOM小区被添加并且位于由解决的ATM信元构成的小区流的顶部。 因此,根据伪BOM小区的目的地地址,将小区流从传输源网关传送到指定的ATM节点。 指定的ATM节点丢弃伪BOM单元,使得原始BOM单元现在位于单元流的顶部。 然后,根据BOM小区的目的地地址,将该小区流从ATM节点传送到传送目的地网关。 传输目的地网关将ATM信元组装成IP包,然后发送给用户LAN。
    • 4. 发明授权
    • Method and apparatus for controlling a flow between terminals in an ATM network
    • 用于控制ATM网络中的终端之间的流量的方法和装置
    • US06208653B1
    • 2001-03-27
    • US09039556
    • 1998-03-16
    • Makoto OgawaMotoo NishiharaMichio Masuda
    • Makoto OgawaMotoo NishiharaMichio Masuda
    • H04L1228
    • H04Q11/0478H04L2012/5635H04L2012/5648H04L2012/5667
    • The present invention provides a gateway unit which comprises a detecting unit for detecting the congestion from an RM cell from the ATM cell, for discriminating a TCP data gram (TCPDG) from a packet received during the congestion and for acquiring a sequence number of the TCPDG, a sending unit for sending an ACK having a window-controlled value to a transmitting terminal so as to limit a data transmission, and a discarding unit for discarding the packet from the transmitting terminal during the congestion after the confirmation of packet. During the congestion in the ATM network, a pseudo acknowledgment is sent from the gateway unit so as to indicate that the receiving terminal cannot receive data. This restrains the transmission of TCPDG from the transmitting terminal.
    • 本发明提供了一种网关单元,其包括检测单元,用于从来自ATM信元的RM信元检测拥塞,用于从拥塞期间接收的分组中识别TCP数据克(TCPDG),并获取TCPDG的序列号 发送单元,用于向发送终端发送具有窗口控制值的ACK以限制数据发送;​​以及丢弃单元,用于在确认分组之后在拥塞期间从发送终端丢弃该分组。 在ATM网络的拥塞期间,从网关单元发送伪确认,以指示接收终端不能接收数据。 这限制了TCPDG从发送终端的传输。
    • 5. 发明授权
    • Connectionless network for routing cells with connectionless address,
VPI and packet-identifying VCI
    • 无连接网络,用于使用无连接地址,VPI和分组识别VCI路由信元
    • US6137798A
    • 2000-10-24
    • US912188
    • 1997-08-15
    • Motoo NishiharaMichio MasudaMakoto Ogawa
    • Motoo NishiharaMichio MasudaMakoto Ogawa
    • H04Q3/00H04L12/46H04L12/70H04Q11/04H04L12/56
    • H04L49/3081H04Q11/0478H04L2012/5619H04L2012/5653H04L2012/5681
    • In a connectionless communication system, a number of interworking units are provided for accommodating local area networks. At the internetworking units, a packet from the local area networks are segmented into cells for transmission to an ATM network. The cells contain a connectionless address designating a designation local area network, a virtual path identifier (VPI) designating a permanent virtual connection, and a virtual channel identifier (VCI) identifying the packet. The ATM network includes a number of cross-connect nodes interconnected by communication links. The cross-connect nodes establish a plurality of permanent virtual connections between the interworking units and the nodes and between the nodes in pairs, receive the cells from the interworking units and route the cells having VCIs of the same value through the permanent virtual connections to a destination interworking unit according to the connectionless address and the VPI contained in the cells. The destination interworking unit assembles the cells having VCIs of the same value into a packet for routine the packet to the destination local area network according to the connectionless address transmitted by the packet.
    • 在无连接通信系统中,为了容纳局域网提供多个互通单元。 在互联网络单元中,来自局域网的分组被分割成用于传输到ATM网络的小区。 小区包含指定局域网的无连接地址,指定永久虚拟连接的虚拟路径标识符(VPI)以及标识该分组的虚拟信道标识符(VCI)。 ATM网络包括通过通信链路互连的多个交叉连接节点。 交叉连接节点在互通单元和节点之间以及成对节点之间建立多个永久虚拟连接,从互通单元接收小区,并将具有相同值的VCI的小区通过永久虚拟连接路由到一个 目的地互通单元根据无连接地址和单元中包含的VPI。 目的地互通单元根据分组发送的无连接地址,将具有相同值的VCI的小区组合到用于将分组例程分组到目的地局域网的分组中。
    • 10. 发明授权
    • Conversion of bit lengths into codes
    • 将位长转换为代码
    • US08018359B2
    • 2011-09-13
    • US12753784
    • 2010-04-02
    • Makoto OgawaTadayuki OkadaKiyoshi TakemuraNobuyoshi Tanaka
    • Makoto OgawaTadayuki OkadaKiyoshi TakemuraNobuyoshi Tanaka
    • H03M7/46
    • H03M7/42
    • Various embodiments are provided to reduce a processing time taken when plural bit lengths each assigned to plural strings are converted into plural codes. In one exemplary embodiment, in response to input of the plurality of bit lengths, a number of strings assigned each of the bit lengths, a bit length assigned to each of the strings, and a sequence number of each string in a group of strings assigned each of the bit lengths are recorded. A plurality of base codes are generated on the basis of the numbers of the strings recorded by the recording unit, the base codes each being a code used as a base for codes having the same one of the bit lengths. A plurality of codes is generated by performing in parallel a plurality of processes respectively for the plurality of strings.
    • 提供了各种实施例,以减少每个分配给多个字符串的多个位长度被转换成多个代码所需的处理时间。 在一个示例性实施例中,响应于多个比特长度的输入,分配每个比特长度的字符串的数量,分配给每个字符串的比特长度以及被分配的一组字符串中的每个字符串的序列号 记录每个位长度。 基于由记录单元记录的串的数量生成多个基本码,每个基准码是用作具有相同比特长度的码的基础的码。 通过分别并行地执行多个字符串来生成多个代码。